I grinned, when I listened to the sounds, coming from my sister's room. They were the noises she always made, when she was in there, “busy” with herself. I licked my lips. Let's see how she's going to wiggle out of this one, the little slut, I thought, and gripped the door handle tight. With a quick, decisive push, I threw her door open wide, loudly entering her room. “Hey sis!” I called, sending her reeling in her chair. I had to admire her, she was sneaky. With one smooth motion she flung something underneath her bed and sat a little contorted in her chair, as if to cover something up. “What're you doing?” I asked.